Apparatus for the electrical treatment of gases



H- J- KENNARD- APPARATUS FOR THE ELECTRICAL TREATMENT or GASES. APPLlCATION FILED MAY 7, 1918- v 1,394,771. 1 Patented Oct. 25, 1921.

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H, 1. KENNARD. APPARATUS FOR THE ELECTRICAL TREATMENT OF GASES.

APPLICATION FILED MAY 7| I9IB- 1,394,771., Patented Oct. 25, 1921.

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avwentoz WMW HT STTES TNT @FFHQEO HAROLD'J. KENNARD, OF EESTON, PENNSYLVANIA, ASSIGNOR TO RESEARCH CORPO- RATIOLT, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Oct. 25, 1921.

' Ap'plicationfiled May 7, 1918. Serial No. 233,101.

To all whom it may concern.

Be it known thatI, HAROLD J. KENNARD, a citizen of the United" States, residing at laston, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for the Electrical Treatment of Gases, of which the following is a specification.

The present invention relates to electrical treatment of gases and especially to apparatus for separating from gases particles suspended therein.

Apparatus of this kind comprise discharge electrodes and'-- collecti electrodes connected, as a rule, to a hlgh voltage direct current supply circuit. As the gas is passed through the space between the discharge electrodes and collecting electrodes, the suspended particles are charged by ions emanating from the discharge electrodes and migrate under the action of this charge toward the collecting electrodes and attach themselves thereto forming a. deposit. It is customary to rap the collecting electrodes from time to time to jar the deposit loose and collect it at the bottom of the treater chamber.

It is the object of the present invention toprovide a treater, simple in construction andoperation and effectively performing the function for, which it is intended, which affords means for automatically cleaning the collecting electrodes.

It is the more particular object to so construct a treater that its collecting electrodes are continuously kept clean during the operation. The invention to this. end consists in the construction and arrangement of parts more fully described in the annexed specifioutlet 3 for the cleaned gas. A shaft 4 extends centrally through the casing 1 and is revolubly mounted in bearings 5 and 6 which are supported upon the frame work 10 of ordinary construction.

On the shaft 4 are mounted a number of disks 7 of electrical conducting material forming the collecting electrodes of the treater. These disks 7 are uniformly spaced from each other to receive centrally between them discharge electrodes. The discharge electrodes may be formed in various ways, but I prefer to use groups of fine wires 8 supported in parallel planes centrally between the disks 7. As particularly shown in Fig. 1, I prefer to use approximately semicircular bows' 9 of electrical conducting ma terial to support the different groups of wires 8 so that two groups are placed between each pair of disks and face each other on opposite sides of the shaft 4. In this manner between each .group of discharge electrodes and the adjacent collecting electrodes is produced an electric field which is substantially circular 'in form, but has a relatively inactive zone near the center to both sides of the shaft 4.

The gas entering through the inlet 2 passes-through the passage-ways defined by ,the disks 7 and is subjected to the action of the electric fields so that the particles suspended in the gas are propelled toward the disks and form a deposit thereon. In the inactive'zones mentioned are disposed brush arms 11 in close proximity to the disks 7. These arms, which may be supported on the casing 1 in any suitable manner, bear on the disks to remove the deposit therefrom as the disks are rotated.

The groups of discharge electrode elements are mounted on two separate supports, one on each side of the shaft 4. Each support comprises a bar 12 carried upon insulators 13, a number of forks 14 extending from one side of the bar and a lever 15 extending from the other side of the bar 12 and held in fixed relation to the casing by an insulator 16. The bows 9 may be secured to the forks 14 in any suitable manner.

The support just described is not essential and may assume other forms, as is ObVlOllS. The shaft 4 is driven by a motor 20 through a gear mechanism comprising pinion 21 on the shaft of the motor, gear 24 on the the disks the wipers or brush arms 11 con-' voltage source of current not shown by wires 26 and 27 which pass through an insulator 28 in the casing 1 and make connection with the support 15, 12, 14.

The operation is obvious. The gas must pass through the intense electric fields set up between the different groups of discharge electrodes and the collecting electrodes and the particlessuspended in the gas are deposited on the latter. During the motion of tinuously remove this deposit which falls down into a hopper or hoppers 18 and is removed froni time to time through the gates 19 which are normally held closed by weights 19. g

It is understood that the detail arrangement may 'be changed' within wide limits within the scope of the invention. The structure disclosed has been merely used as a concrete example to facilitate the understanding of the principle upon which the invention is based.

I claim Q 1. Apparatus for the electricaltreatment of gases, comprising a revolubly mounted disk-shaped electrode, a stationary filamentary electrode substantially arallel to the side of the disk and means or passing the gas to be treated through the space intermediate the said electrodes.

2. Apparatus for the electrical treatment of gases, comprising a revolubly mounted disk-shaped electrode, a discharge electrode substantlally parallel to one side of the disk, means for passing the gas to be treated through the space intermediate the said electrodes and means operative upon the side of the disk to remove deposit therefrom.

3. Apparatus for the electrical treatment of gases comprising a revolubly mounted disk-shaped electrode, a discharge electrode at each side of the disk and substantially parallel thereto, means for passing the gas to be treated throughthe spaces intermediate the disk and the discharge electrodes and means operative upon the disk to remove the deposit therefrom.

4. Apparatus for the electrical treatment of gases comprising a plurality of elongated discharge electrodes .lymgsubstantially in a single plane, a disk-shaped collecting electrode mounted to revolve in a plane which is parallel to said first plane and spaced thererom' to define a passage for the gas to be treated.

5. Apparatus for the electrical treatment of gases comprising a plurality of elongated discharge electrodes lying substantially in a single plane, a disk-shaped collecting electrode mounted to revolve in a plane which is parallel to said first plane and spaced therefrom to define a passage way for the gas to' be treated and means outside said passage way for cleaning the collecting electrode.

6. Apparatus for the electrical treatment of gases comprising a plurality of discharge electrodes arranged in groups lying in substantially equidistant parallel lanes and a pluralit of disk-shaped collecting electrodes mounte in spaced rel'ationshi to revolve in planes intermediate the sai groups and parallel thereto.

7. Apparatus for the electrical treatment of gases comprising a revolubly mounted disk-shaped collecting electrode, a discharge electrode element spaced from the side of 1 disk to produce an electric field and to define a relativelyinactive zone and means in the said inactive zone for cleaning the collecting electrode.

8. Apparatus for the electrical treatment I tional engagement with the side of the collectin electrode.

9. pparatus for. the electrical treatment of gases comprising a disk mounted to revolve in a substantially vertical plane, means for roducing adjacent the side of said disk a fie d of electric stress anda relatively inactive zone, and means in said inactive zone for cleaning the disk.

10. Apparatus for the electrical treatment of gases comprising a revolubly mounted disk, means for producing adjacent the side of said disk a field of electric stress and a relatively inactive zone, means in said inactive zone for cleaning the disk and means for causing the gasto pass through said field in lanes parallel to the disk.

ature.

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